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ADG726 powered with 3.3voly but 5 volt input applied

In my application by an error we powered the ADG726 with 3.3. volt but inputs applied were 5 volt through series resistor for few hours and at output of mux maximum signal level was 4 volt, which resulted in the wrong system behavior (subsequent FPGA device connected to mux output detected the wrong logic). 

Afterward we corrected the mistake and mux was powered with 5 volt and inputs were same 5 volt signal through series resistors and system behavior was correct.

My question is whether we have caused any permanent damage to mux chip ADG726 or stressed it? .

Can i continue to use the same chip in my application without replacing it?

Kindly give your opinion given this system is used for --telemetry applications.

Thanks and Regards